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Urgent guys plz help

Answer»

1) in CHEMICAL change new product is formed.
& chemical change take place.

2) MgoH2 is aqueous , & strong Salt

3) burning NEEDS o2 while rusting need Air & water both

4) burning of WOOD is non covential form of ENERGY.
while glow in bulb may be covential energy (solar cells)

5) Magnesium ribbion burn with spark.


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